1st place?? The ara-ara is strong... I believe she is the only one to be genuinely attracted to yukey(without the payment of the slave power) so she deserves it.
I figured the reason for their monster hybridization was something like that. I'm a bit disappointed it was not something more convuluted. They could have really pushed for something really interesting but, I cant complain too much. It's a manga not an award winning novel.